Of the 54 football players at Serra-San Mateo, 39 play another sport. Head coach Patrick Walsh doesn't like that.
He wishes more of them would play a second sport.
"I hate specialization," he said. "It makes no sense, in my opinion."
The trend toward specialization in youth sports, in which athletes play one sport year-round for expensive travel and club teams, has had a significant impact on traditional high school programs, which have declined in popularity and participation.